Bouncing sander

[Dan Forman]

So I've been using one of the plastic shafted sanding mandrels in my drill, and it bounces all over the place. Are the ones with the metal shafts any better, or is it just the nature of the beast? The lathe is turning slow and so is the drill.

I got tired of this with the bowl I'm currently working on, and brought out the Rotex 5" ROS, which rotates in addition to the ROS movement, and used that on the outside of the bowl, and it worked great! I have discs for it up to 400. Did the work much faster and didn't bounce at all. It's too big for inside of most bowls though.

Anyone know of a similar 2 or 3 inch rotating sander for the insides?

Dan

[Reed Gray]

Well, the only thing that I have found to make my sander (angle drill with firm pads) bounce is when I am on the inside of a bowl. If I have the entire pad engaged with the wood, as in flat on the wood rather than up on one edge, it will try to skate around. Same seems to happen on flat work with random orbit sanders and big palm sanders. Having it up on edge seems to make it more stable, where as when it is flat, you have areas going in opposite directions. Doesn't seem to happen on the outside of the bowl.

robo hippy

[Cody Colston]

Dan,

When I first started power sanding my turnings, I bought a Sioux close-quarters drill. It was sorta pricey at $150+ but worked well...for about 1.5 years.

So, instead of paying big bucks for another Sioux, I went bargain hunting and found a Neiko on Amazon that, except for color, looked just like the Sious for about 1/5 the cost.

The first one lasted about as long as the Sious and I'm on my second one now. I use 2" and 3" sanding pads and discs that I got at CSUSA.

http://www.amazon.com/Professional-Grade-Close-Quarters-Right-Angle-Drill/dp/B000XUHA8C/ref=sr_1_23?ie=UTF8&s=hi&qid=1253755260&sr=1-23

[Ryan Baker]

I've never seen a plastic-shafted sanding mandrel, but it doesn't sound like a good idea. A 2", metal shaft mandrel is like $8 at any of the usual suppliers. I've never had a bouncing problem with any of them.

[Bernie Weishapl]

I use the metal shaft for 1", 2" and 3". I have found that the plastic does have a tendency to bounce.

[Dan Forman]

I think it is worse on the inside, though I do try to use only the edge of the pad. I have a Sioux knockoff, doesn't even have a brand name of any kind. It cost about twice what Cody's did.

I couldn't find anything steel shank mandrels here locally. Woodcraft has them in a kit with a full range of sanding discs, but all I need is just the mandrel. My friend checked it out and didn't think there was anything amiss, but I'll probably go ahead and order something just to satisfy my curiosity. The one I saw in the CSUSA catalog is about $16.

Dan

[Steve Schlumpf]

Dan - I use a metal shaft on my sander and have no problems. I also use a sanding pad between the holder and the sanding disk - that also makes a difference.

Check out Vince's site - has everything you need - or at least gives you options.
http://www.vinceswoodnwonders.com/

[Dan Forman]

Dan - I use a metal shaft on my sander and have no problems. I also use a sanding pad between the holder and the sanding disk - that also makes a difference.

Check out Vince's site - has everything you need - or at least gives you options.
http://www.vinceswoodnwonders.com/

Steve---I got mine from Vince. I use the radiused or tapered interface pads for inside/outside respectively. Looks like he has another "backup pad" that has a metal shaft, but the ones I got were plastic.

Dan

[ROY DICK]

http://www.woodturningvideosplus.com/sanding-mandrels.html

I made some of these. They work great.

Roy

[Phil St.Germain]

Dan,

My sanding pad will bounce and I have the metal shaft. I use both 2 and 3 inch disks. I usually get the bouncing when I am being to aggressive with a bad angle of approach. I find that if I just slow myself down and change the angle of approach the bounce goes away.


Phil

[Dan Forman]

http://www.woodturningvideosplus.com/sanding-mandrels.html

I made some of these. They work great.

Roy

Thanks for that.

Dan